JP2676063B2 - connector - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an electrical connector including both plug-type and receptacle-type connectors mounted on the surface of a board, and in particular,
The present invention relates to an improvement in the structure of a small connector in which contacts are arranged at a fine pitch.

(Prior Art) In recent years, with the spread of small electronic devices such as portable video cameras, there has been an increasing demand for small connectors for electrically connecting between boards or between devices. Surface mount type connectors, which can be easily connected to electrons and can be mounted at high density, are becoming more important. Such a surface mount connector is generally composed of a receptacle connector which is soldered on one board and a plug connector which is soldered on the other board. The contacts arranged in the connector are in contact with each other to electrically connect the elements on both boards. Normally, the outer wall or inner wall of the two connectors are prevented from fitting. A lock mechanism is formed on the.

However, when the lock mechanism is provided on the outer wall or the inner wall of the connector as described above, the structure of the connector is inevitably complicated and large in structure, which is an obstacle to improving the mounting density of the board. Therefore, without providing the locking mechanism as described above, the contact on the plug side is held by the receptacle-type contact when both connectors are fitted, and the friction force between the contacts prevents the connectors from coming off. A mountable connector is known (Japanese Patent Laid-Open No. 63-285880).

(Problems to be Solved by the Invention) However, it is difficult to surely prevent the connectors from being disengaged from each other by coupling the connectors only by the frictional force between the contacts without providing the locking means. It has been difficult to give the operator a feeling that the fitting has been reliably performed, for example, a click feeling.

The present invention has been made to solve the above-mentioned problems, and it is possible to reliably prevent disengagement of both connectors without hindering improvement in board mounting density and to ensure that both connectors are securely fitted. It is an object of the present invention to provide an electric connector that can be informed to persons.

(Means for Solving the Problems) A connector according to the present invention includes: an insulating housing having a convex portion extending in the longitudinal direction and having a plurality of notches arranged on both sides in the longitudinal direction; Plug-type connector having a substantially J-shaped elastic contact portion housed in the cutout portion without protruding from the portion and a plurality of elastic contacts having a locking engaging portion near the tip of the elastic contact portion An insulating housing having a groove for receiving the convex portion, and a plurality of contacts having a contact portion extending substantially linearly and having a locking engaging portion near the tip of the contact portion. The elastic contact and the contact are both formed in a flat plate shape and have a width along the arrangement direction orthogonal to the arrangement direction. The length of the contacts is smaller than the length along the direction, and the contacts are arranged on each of the inner walls of the recessed groove of the receptacle-type connector that face each other, with a partition wall interposed between the contacts and the adjacent contacts. It is characterized in that it enters into the cut portion of the convex portion at the time of matching.

(Operation) According to the above configuration, the lock mechanism portion is not formed on the outer wall or the inner wall of both connectors, and the lock engaging portions of the contacts of both connectors are engaged with each other so that both connectors can be fitted together. Since the connectors are locked, the connectors themselves are not complicated and do not increase in size, there is no obstacle in improving the board mounting density, and the connectors can be reliably prevented from coming off. In addition, when the plug-type connector is inserted into the receptacle-type connector, and when the locking engaging portions of both contacts elastically engage with each other, a click feeling is generated. The operator can be informed.

(Embodiment) Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

Of the connectors of the present invention, FIG. 1 shows an embodiment of a plug-type connector, and FIG. 2 shows an embodiment of a receptacle-type connector.
And the receptacle-type connector 2 are combined to form a connector. This plug type connector 1
Is an insulating housing having a convex portion 1b along the longitudinal direction.
1a and a substantially J-shaped elastic contact portion 3d inserted and fixed in a cut portion 5 arranged between each of the plurality of partition walls 4 of the housing 1a.
And a contact 3 having. The contact 3 is preferably formed by punching out a plate made of a conductive material such as a copper alloy, and has a flat plate shape as shown in FIG. 1 and a width along the arrow A direction, that is, the arrangement direction of the contacts 3. Is set smaller than the length orthogonal to that direction, and the bent portion 3a is formed in front of the connector (receptacle type connector 2
It is arranged at a pitch of 0.5 mm so that it faces toward the direction (insertion direction) and has elasticity due to its shape, and a pressing force is applied from the outside of the cut portion 5 (lateral direction of the housing 1a; the same applies hereinafter). Occasionally, an urging force acts to push back this pressing force. In addition, there is a notch 5 at the tip.
Is formed with a convex portion 3b facing outward. In addition, the base 3c
Is projected from the bottom surface of the housing 1a by a certain length and is soldered to the circuit board. The elastic contact portion 3d is completely housed in the notch 5, so that there is no inconvenience such as contact with other uncorresponding contacts or damage or deformation of the elastic contact portion 3d due to foreign matter. It is considered. A barb 8 is formed at the base of each contact 3 so that each contact 3 engages with the housing 1a.

On the other hand, the receptacle type connector 2 comprises an insulating housing 2a and a plurality of contacts 6 as shown in FIG. Similar to the contact 3, the contact 6 is preferably formed by punching a plate of a conductor material such as a copper alloy, and has a flat plate shape as shown in FIG. The width along the arrangement direction is set smaller than the length orthogonal to the direction. , The contacts 6 are arranged at a pitch of 0.5 mm with the partition wall 7 interposed therebetween. Therefore, the contact 6 is positioned by the partition wall 7 so that the interval (pitch) between the adjacent contacts 6 does not change. The contact 6 has a contact portion 6c extending substantially linearly from the base portion 6b, and the tip end thereof engages with the convex portion 3b of the plug-type connector 1 when the connector is fitted.
A convex portion 6a directed inward is formed, and a barb 9 for engaging the contact 6 with the housing 2a is formed near the base 6b of the contact 6. Further, the base portion 6b of the contact 6 is formed above the upper surface 2b of the housing 2a so as to protrude by a certain length, whereby the base portion 6b of the contact 6 is mounted when the receptacle connector is mounted on the circuit board. Can be easily soldered onto the pattern of the circuit board. FIG. 3 is a sectional view showing a state in which the above-described two connectors 1 and 2 are fitted (as seen from the direction of the arrow A in FIGS. 1 and 2).

That is, the plug-type connector 1 is moved in the direction of arrow B with the bent portion 3a of the contact 3 as the front and inserted into the concave groove 2c of the receptacle-type connector 2, and when the convex portion 3b of the contact 3 comes into contact with the convex portion 6a. As the plug-type connector 1 is inserted, the protrusion 3b is pushed inward due to the elasticity of the contact 3, and when it is further inserted, the protrusion 3b goes beyond the protrusion 6a and becomes in the state shown in FIG. At this time, the convex portion 3b is urged outward by the urging force generated from the shape of the contact 3, but because of the contact 6, the convex portion 3b is negative in the unloaded state.
It does not return to the position of 3b '(shown by the broken line). Therefore, when both connectors 1 and 2 are in such a state,
The protrusions 3b and 6a of the contacts 3 and 6 are engaged with each other to lock the connectors 1 and 2 and give a so-called click feeling to the operator.

In FIG. 3, a portion of the contact 6 facing the contact 3 is housed in the cut portion 5 of the insulating housing 1a. Therefore, the contact 6 is
From the start of the fitting of 1 and 2 to the completion of the fitting, it is guided by the cut portion 5 and contacts with the contact 3 only in the cut portion 5, so that problems such as short circuit and poor contact do not occur.

FIG. 4 is a perspective view showing an embodiment different from the embodiment of the receptacle type connector shown in FIG. 2, and FIG. 5 is shown in FIG. 4 and the receptacle type connector 12 shown in FIG. FIG. 7 shows a state in which the plug-type connector 1 is fitted, and is a view of the cross section along line XX of FIG. 4 viewed from the direction of arrow C. The connector 12 shown in FIG. 4 basically has the same function as the connector 2 shown in FIG.
The base portions 16b and 16e of the contact 16 protruding from the solder are connected to the circuit board by soldering, and are configured in consideration of convenience when the plug-type connector 1 is inserted from the lateral direction of the board. In addition, this receptacle type connector 12
Is a housing 12a having a plurality of contacts 16 arranged therein. Unlike the connector 2 of FIG. 2, the left and right contacts 16c and 16d have different shapes. The contacts 16 are formed with barbs 19a and 19b for engaging with the housing 12a, as in the connector 2 of FIG. Thus, the plug-type connector 1 can be appropriately combined with the two types of receptacle-type connectors 2 and 12 without changing the shape.

The connector of the present invention is not limited to that of the above-described embodiment, but can be modified in various ways. For example, the contacts of the connector do not necessarily need to be arranged in two rows, but may be arranged in one row. It is possible. Further, the locking engagement portions of both contacts may not be both convex portions, and for example, one may be a convex portion and the other may be a concave portion that engages with this convex portion.

(Effects of the Invention) According to the present invention, the locking engagement portion is provided near the tip of the substantially J-shaped elastic contact portion of the elastic contact, and the locking engagement portion is provided near the tip of the contact portion that extends substantially linearly of the contact. Since the mating portion is provided and the fitting of both connectors is locked by the engagement of both contacts, without increasing the width along the flat plate surface of the elastic contact portion and the contact portion,
Therefore, without increasing the length of the connectors in the lateral direction, the connectors are prevented from coming off and a clicking feeling is given when the connectors are fitted.

Further, both the elastic contact and the contact are formed in a flat plate shape, and the width along the arrangement direction of these contacts is set to be smaller than the length orthogonal to the arrangement direction. The length, that is, the length along the longitudinal direction of the connector can be shortened.

Therefore, the length of the connector in the longitudinal direction and the length in the lateral direction can both be shortened, so that the overall size of the connector can be reduced and the mounting density can be improved.

Further, since the elastic contact portion of the elastic contact is accommodated in the cut blow without protruding from the convex portion of the insulating housing, short circuit between adjacent elastic contact portions, damage or deformation of the elastic contact portion due to foreign matter, etc. The trouble of can be prevented.

Further, the contacts of the receptacle-type connector are arranged on each of the inner walls of the concave groove facing each other with a partition wall interposed between the contacts, and the contacts enter the notch of the convex portion when the two connectors are fitted. The connector is positioned so that the pitch of the connector does not change, and the contact between the elastic contact and the contact is ensured when the two connectors are fitted together.

[Brief description of the drawings]

1 is a perspective view showing a plug-type connector of a connector according to an embodiment of the present invention, FIG. 2 is a perspective view showing a first receptacle-type connector of a connector according to an embodiment of the present invention, and FIG. FIG. 4 is a cross-sectional view showing a state in which the connectors of FIGS. 1 and 2 are fitted, FIG. 4 is a perspective view showing a second receptacle type connector of the connectors according to the embodiment of the present invention, and FIG. FIG. 6 is a cross-sectional view taken along line XX showing a state in which the connectors of FIGS. 1 and 4 are fitted. 1 …… Plug type connector 1a …… Insulation housing 1b …… Convex section 2,12 …… Receptacle type connector 2a, 12a …… Insulation housing 2c …… Recessed groove 3 …… Elastic contact 3b …… Lock engagement section (Convex part) 3d …… Elastic contact part 5 …… Notch part 6,16 …… Contact 6a, 16a …… Lock engaging part (projection part) 6c, 16f …… Contact part 7,17 …… Partition wall

Claims (1)

(57) [Claims] 1. An insulating housing having a convex portion extending in the longitudinal direction and having a plurality of notches arranged on both sides in the longitudinal direction; and an insulating housing in the notch without protruding from the convex portion. A plug-type connector having a substantially J-shaped elastic contact portion accommodated therein and a plurality of elastic contacts having locking engaging portions near the tip of the elastic contact portion, and a recess for receiving the convex portion. An elastic housing having a groove formed therein, and a receptacle-type connector having a plurality of contacts each having a contact portion extending substantially linearly and having a locking engaging portion near a tip of the contact portion. And each of the contacts is formed in a flat plate shape, and the width along the arrangement direction is set smaller than the length along the direction orthogonal to the arrangement direction, The contacts are arranged on each of the inner walls of the recessed groove of the receptacle-type connector that face each other with a partition wall interposed between the contact and the adjacent contact, and when the connectors are fitted to each other, the contacts are arranged in the cutouts of the convex portion. A connector that is characterized in that